Dorma BTS75


Dorma  BTS75 Floor spring

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For internal doors up to 1100mm

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Hold open unit not for use on a fire door

Max door weight of 120kg

Fixed back check,

Adjustable power size 1-4

Closing speed adjustment between 175-15 degrees and 15-0 degrees

Universal application range

Whether standard, narrow or wide, whether LH, RH, or single or double-action – the DORMA BTS 75 V door spring is designed for all types of doors. A comprehensive program of accessories ensures that it can be used successfully with a wide variety of door constructions and floor coverings.

Maximum reliability and quality

Thanks to a wide range of functions which can be individually selected to suit different requirements, DORMA BTS 75 V floor springs offer maximum reliability and quality.

Benefits for the trade/distributor

  • Reduced stocking requirements thanks to separate, interchangeable spindles
  • Streamlined product range offering all key functions

Benefits for the installer

  • Suitable for installation with LH or RH single and double action doors
  • Interchangeable spindles enable easy adaptation to structural conditions – even when retrofitted

Benefits for the architect/specifier

  • Concealed installation for maximum visual elegance
  • All essential functions provided
  • Proven, robust design

Benefits for the user

  • Constant, temperature independent closing cycle

Additional information

Floor Springs

BTS75 Double Action Pack SSS, BTS75 EN1-4 HO 90* Spindle Mec & Box, BTS75 EN1-4 NHO & Spindle Mec & Box, BTS75V Single Action Pack SSS


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Dorma BTS75